March 31 (Reuters) - Optiva Inc OPT.TO :
* OPTIVA ANNOUNCES CHANGE TO ANNUAL AND SPECIAL MEETING DATE
* OPTIVA INC - POSTPONING DATE OF ITS ANNUAL AND SPECIAL MEETING OF SHAREHOLDERS
March 31 (Reuters) - Optiva Inc OPT.TO :
* OPTIVA ANNOUNCES CHANGE TO ANNUAL AND SPECIAL MEETING DATE
* OPTIVA INC - POSTPONING DATE OF ITS ANNUAL AND SPECIAL MEETING OF SHAREHOLDERS